A hard lump grows on the penis skin

What is the cause of a hard lump on the penis skin? The dorsal or ventral side of the penis shows a lump, and the following two diseases are often considered: First, penile sclerosis, which often shows and the dorsal side of the penis. Typical symptoms are that we can palpate induration, plaque or cord, often accompanied by pain of penis erection, and severe penile scoliosis. In addition, if it is in the glans, hard texture, we also consider the possibility of penile cancer. The above health science popularization knowledge is for reference only. The specific situation needs to be examined in a regular hospital and judged by a professional doctor.